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Hi,
We see the mapping of AHB5 prot signal with AXI cache signals given in the table in
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.101375_0000_00_en/bct1529512318797.html
It is seen that the mapping here is given with respect to AXI5, I think it should be the same with AXI3/AXI4. Please confirm this.
If we have to map AHB5 prot to AXI cache signal,
AXI signal
Value derived from AHB signal
awcache[3]
hprot[5] for write
arcache[2]
hprot[5] for read
axcache[1]
hprot[3]
axcache[0]
hprot[2]
axprot[2]
~hprot[0]
axprot[1]
hnonsec
axprot[0]
hprot[1]
hprot[6] shareable attribute will not be mapped to any signal in AXI3/AXI4.
What happens to the look up attribute hprot[4]? Is there any corresponding bit in the AXI cache signals which this bit can be mapped to?
Thanks,
Manasa